Coilopoceras has an established range from the upper Albian to Turonian in the Late Cretaceous.[1] Its distribution is widespread, from western North America (Mexico, New Mexico, Texas) through northern Africa (Egypt, Cameroon, Niger, Nigeria and Tunisia) and Europe (France) to the Middle East (Israel), Madagascar and South America (Brazil, Peru and Colombia; La Frontera and San Rafael Formations).[1][2]
Arkell, W.J.; Kummel, B.; Wright, C.W. (1957). Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Lawrence, Kansas: Geological Society of America and University of Kansas Press.
